CTSL Group has been acquired by Celnor Group and Seed Environmental

June 2025 — CTSL Group has joined forces with Seed Environmental, with the support of Celnor Group, to strengthen collective expertise in environmental services and remediation.

Founded in 2006 and headquartered in Lancashire, with additional depots in Barnsley, Bathgate, Gloucester, Belfast and Cambridge, CTSL Group is one of the UK’s leading specialists in environmental compliance, spill response and remediation. The company’s experienced advisors also provide specialist environmental inspections to businesses throughout the planning process prior to development of both greenfield and brownfield sites. CTSL’s comprehensive expertise complements Celnor’s existing capabilities in environmental consulting, flood and fire response, industrial restoration and a wide range of compliance and remediation services.

Celnor is a private equity-backed group of complementary businesses delivering a broad range of inspection, testing, certification and compliance (TICC) services to commercial clients across the UK. Backed by Inflexion, Celnor is executing a targeted buy-and-build strategy within the TICC sector, aiming to acquire like-minded businesses that align with its vision and values. The goal is to create a collaborative group capable of providing end customers with the critical data and services needed to ensure safe, sustainable and compliant operations.

Seed Environmental specializes in incident response, environmental compliance and remediation and property restoration. The company provides tailored solutions for pollution events, hazardous material incidents, fire and flood damage and contaminated land or property. Working closely with insurers, commercial clients and public sector organizations, Seed Environmental is recognized for its intelligent, site-specific approach to managing complex environmental and property challenges. It has a national presence across the UK and Ireland.

Our role in the transaction

Oaklins S&W, based in the UK, acted as the exclusive sell-side advisor to CTSL Group. The transaction builds on the team’s extensive experience in the TICC sector and further highlights their ability to advise on strategic transactions within compliance-driven industries.